function t = selectTotalRange(filelist, target)
    num = length(filelist);
    for i = 1:num
        inpath = filelist(i);
        img = jpeg_read(inpath);
        coef = img.coef_arrays{1};
        clear img;
        
    end
    c = cell(8,8);
    t = zeros(8,8);

end
